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libpayload: Fix legacy CBFS code after recent refactoring 

The goal when adding the new CBFS API in CB:59497 was that the old CBFS
code would be left completely untouched and just moved to the side a
bit, so that it could continue to work for the payloads that use it
until they all have time to transition to the new CBFS API.
Unfortunately, between the different iterations of the patch something
went wrong with that and the final committed version of cbfs_legacy.c
does differ in some parts from the original code, including a changed
macro definition that breaks decompression support. This patch restores
all the legacy CBFS files to exactly what they used to be (other than
the necessary changes in cbfs_core.h to avoid double definition
clashes).

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Ic7fd428acb03d3830f66f807cd1d7cdbd652f409
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61061
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
This commit is contained in:
Julius Werner 2022-01-12 15:42:49 -08:00
parent f04e83abbf
commit db29b3765b
3 changed files with 53 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
payloads/libpayload/include/cbfs_legacy.h
View File

@ -46,7 +46,6 @@
#define _CBFS_LEGACY_H_
#include <cbfs_core.h>
#include <libpayload.h>
/* legacy APIs */
const struct cbfs_header *get_cbfs_header(void);

1
payloads/libpayload/libcbfs/cbfs_core.c
View File

@ -242,6 +242,7 @@ void *cbfs_get_contents(struct cbfs_handle *handle, size_t *size, size_t limit)
cbfs_get_attr(handle, CBFS_FILE_ATTR_TAG_COMPRESSION);
if (comp) {
algo = ntohl(comp->compression);
DEBUG("File '%s' is compressed (alg=%d)\n", name, algo);
*size = ntohl(comp->decompressed_size);
/* TODO: Implement partial decompression with |limit| */
}

60
payloads/libpayload/libcbfs/cbfs_legacy.c
View File

@ -26,28 +26,49 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#define LIBPAYLOAD
#ifdef LIBPAYLOAD
# include <libpayload-config.h>
# if CONFIG(LP_LZMA)
# include <lzma.h>
# define CB_CBFS_CORE_WITH_LZMA
# define CBFS_CORE_WITH_LZMA
# endif
# if CONFIG(LP_LZ4)
# include <lz4.h>
# define CB_CBFS_CORE_WITH_LZ4
# define CBFS_CORE_WITH_LZ4
# endif
# define CBFS_MINI_BUILD
#elif defined(__SMM__)
# define CBFS_MINI_BUILD
#else
# define CBFS_CORE_WITH_LZMA
# define CBFS_CORE_WITH_LZ4
# include <lib.h>
#endif
#include <cbfs_legacy.h>
#include <stdio.h>
#include <cbfs.h>
#include <string.h>
#ifdef LIBPAYLOAD
# include <stdio.h>
# define DEBUG(x...)
# define LOG(x...)
# define ERROR(x...) printf(x)
#ifndef __SMM__
#else
# include <console/console.h>
# define ERROR(x...) printk(BIOS_ERR, "CBFS: " x)
# define LOG(x...) printk(BIOS_INFO, "CBFS: " x)
# if CONFIG_LP_DEBUG_CBFS
# define DEBUG(x...) printk(BIOS_SPEW, "CBFS: " x)
# else
# define DEBUG(x...)
# endif
#endif
#include "cbfs_core.c"
#ifndef __SMM__
static inline int tohex4(unsigned int c)
{
return (c <= 9) ? (c + '0') : (c - 10 + 'a');
@ -84,8 +105,10 @@ void *cbfs_load_stage(struct cbfs_media *media, const char *name)
if (stage == NULL)
return (void *) -1;
LOG("loading stage %s @ %p (%d bytes), entry @ 0x%llx\n", name,
(void *)(uintptr_t)stage->load, stage->memlen, stage->entry);
LOG("loading stage %s @ %p (%d bytes), entry @ 0x%llx\n",
name,
(void*)(uintptr_t) stage->load, stage->memlen,
stage->entry);
final_size = cbfs_decompress(stage->compression,
((unsigned char *) stage) +
@ -138,8 +161,7 @@ void *cbfs_load_payload(struct cbfs_media *media, const char *name)
media, name, CBFS_TYPE_SELF, NULL);
}
struct cbfs_file *cbfs_find(const char *name)
{
struct cbfs_file *cbfs_find(const char *name) {
struct cbfs_handle *handle = cbfs_get_handle(CBFS_DEFAULT_MEDIA, name);
struct cbfs_media *m = &handle->media;
void *ret;
@ -158,21 +180,19 @@ struct cbfs_file *cbfs_find(const char *name)
return ret;
}
void *cbfs_find_file(const char *name, int type)
{
void *cbfs_find_file(const char *name, int type) {
return cbfs_get_file_content(CBFS_DEFAULT_MEDIA, name, type, NULL);
}
const struct cbfs_header *get_cbfs_header(void)
{
const struct cbfs_header *get_cbfs_header(void) {
return cbfs_get_header(CBFS_DEFAULT_MEDIA);
}
/* Simple buffer */
void *cbfs_simple_buffer_map(struct cbfs_simple_buffer *buffer, struct cbfs_media *media,
size_t offset, size_t count)
{
void *cbfs_simple_buffer_map(struct cbfs_simple_buffer *buffer,
struct cbfs_media *media,
size_t offset, size_t count) {
void *address = buffer->buffer + buffer->allocated;
DEBUG("simple_buffer_map(offset=%zu, count=%zu): "
"allocated=%zu, size=%zu, last_allocate=%zu\n",
@ -190,8 +210,8 @@ void *cbfs_simple_buffer_map(struct cbfs_simple_buffer *buffer, struct cbfs_medi
return address;
}
void *cbfs_simple_buffer_unmap(struct cbfs_simple_buffer *buffer, const void *address)
{
void *cbfs_simple_buffer_unmap(struct cbfs_simple_buffer *buffer,
const void *address) {
// TODO Add simple buffer management so we can free more than last
// allocated one.
DEBUG("simple_buffer_unmap(address=%p): "
@ -220,4 +240,4 @@ int run_address(void *f)
return v();
}
#endif /* __SMM__ */
#endif